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Flask-Failsafe 0.2

Flask-Failsafe

A failsafe for the Flask reloader.

The Flask reloader works great until you make a syntax error and it fails
importing your app. This extension helps keep you working smoothly by catching
errors during the initialization of your app, and provides a failsafe fallback
app to display those startup errors instead.

To use it, run your app via a small script script with a factory function to
initialize your app:

from flask_failsafe import failsafe
@failsafe
def create_app():
# note that the import is *inside* this function so that we can catch
# errors that happen at import time
from myapp import app
return app
if __name__ == "__main__":
create_app().run()

The @failsafe decorator catches any errors calling create_app() and
returns a fallback app that will instead display the Flask error debugger.

If you use Flask-Script, you can pass
the same @failsafe-decorated factory function to the Manager() class: